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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2020-08-14 07:56:27 +0200 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-09-02 03:00:21 +0200 |
| commit | 704dfe931df951895dea98bd1d9cacbb601b6451 (patch) | |
| tree | aca2368fc39811c2e404184d27a76422e4c469fc /arch/powerpc/mm | |
| parent | powerpc: Rewrite 4xx flush_cache_instruction() in C (diff) | |
| download | linux-704dfe931df951895dea98bd1d9cacbb601b6451.tar.xz linux-704dfe931df951895dea98bd1d9cacbb601b6451.zip | |
powerpc: Rewrite FSL_BOOKE flush_cache_instruction() in C
Nothing prevents flush_cache_instruction() from being writen in C.
Do it to improve readability and maintainability.
This function is only use by low level callers, it is not
intended to be used by module. Don't export it.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/f989eff8296800c427622c0985384148404e4f0b.1597384512.git.christophe.leroy@csgroup.eu
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/nohash/fsl_booke.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/mm/nohash/fsl_booke.c b/arch/powerpc/mm/nohash/fsl_booke.c index 0c294827d6e5..36bda962d3b3 100644 --- a/arch/powerpc/mm/nohash/fsl_booke.c +++ b/arch/powerpc/mm/nohash/fsl_booke.c @@ -219,6 +219,22 @@ unsigned long __init mmu_mapin_ram(unsigned long base, unsigned long top) return tlbcam_addrs[tlbcam_index - 1].limit - PAGE_OFFSET + 1; } +void flush_instruction_cache(void) +{ + unsigned long tmp; + + if (IS_ENABLED(CONFIG_E200)) { + tmp = mfspr(SPRN_L1CSR0); + tmp |= L1CSR0_CFI | L1CSR0_CLFC; + mtspr(SPRN_L1CSR0, tmp); + } else { + tmp = mfspr(SPRN_L1CSR1); + tmp |= L1CSR1_ICFI | L1CSR1_ICLFR; + mtspr(SPRN_L1CSR1, tmp); + } + isync(); +} + /* * MMU_init_hw does the chip-specific initialization of the MMU hardware. */ |